6412991628 has 24 divisors (see below), whose sum is σ = 14971371520. Its totient is φ = 2136560400.

The previous prime is 6412991623. The next prime is 6412991653. The reversal of 6412991628 is 8261992146.

It is a super-2 number, since 2×6412991628² = 82252923241596180768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6412991621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113548 + ... + 160371.

Almost surely, 2^6412991628 is an apocalyptic number.

It is an amenable number.

6412991628 is an abundant number, since it is smaller than the sum of its proper divisors (8558379892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6412991628 is a wasteful number, since it uses less digits than its factorization.

6412991628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275877 (or 275875 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 6412991628 is about 80081.1565101304. The cubic root of 6412991628 is about 1857.8909717443.

The spelling of 6412991628 in words is "six billion, four hundred twelve million, nine hundred ninety-one thousand, six hundred twenty-eight".